The Handbook is a definitive reference source and teaching aid for <br>econometricians. It examines models, estimation theory, data analysis and field <br>applications in econometrics. Comprehensive surveys, written by experts, discuss recent developments at a level suitable for professional use by economists, econometricians, statisticians, and in advanced graduate econometrics courses.<BR>For more information on the Handbooks in Economics series, please see our home page on <SURL>http://www.elsevier.nl/locate/hes</SURL>